CVE-2020-13388 : Security Advisory and Response
Learn about CVE-2020-13388, a vulnerability in the jw.util package for Python allowing arbitrary code execution. Find out how to mitigate and prevent this security risk.
A vulnerability in the jw.util package for Python allows the execution of arbitrary Python code, leading to OS command execution.
Understanding CVE-2020-13388
What is CVE-2020-13388?
An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before version 2.3 for Python. By loading a configuration with YAML using certain methods, an attacker can run arbitrary Python code, potentially resulting in OS command execution.
The Impact of CVE-2020-13388
This vulnerability can be exploited by attackers to execute malicious Python code, potentially leading to unauthorized OS command execution.
Technical Details of CVE-2020-13388
Vulnerability Description
The vulnerability lies in the configuration-loading feature of the jw.util package, allowing the execution of arbitrary Python code when loading configurations with specific methods.
Affected Systems and Versions
- Systems using jw.util package before version 2.3 for Python
Exploitation Mechanism
The vulnerability can be exploited by loading a configuration with YAML using FromString or FromStream methods without safe_load, enabling the execution of arbitrary Python code.
Mitigation and Prevention
Immediate Steps to Take
- Update to version 2.3 or later of the jw.util package to mitigate the vulnerability
- Avoid loading configurations with untrusted sources
Long-Term Security Practices
- Regularly update software and packages to the latest versions
- Implement secure coding practices to prevent code injection vulnerabilities
Patching and Updates
- Monitor for security advisories and apply patches promptly to address known vulnerabilities